US8303148B2 - Illumination unit for vehicle headlights, and vehicle headlight - Google Patents

Illumination unit for vehicle headlights, and vehicle headlight Download PDF

Info

Publication number
US8303148B2
US8303148B2 US12/516,706 US51670607A US8303148B2 US 8303148 B2 US8303148 B2 US 8303148B2 US 51670607 A US51670607 A US 51670607A US 8303148 B2 US8303148 B2 US 8303148B2
Authority
US
United States
Prior art keywords
luminaire
illumination unit
housing
bore
light emitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US12/516,706
Other versions
US20100067248A1 (en
Inventor
Peter Frey
Ralf Vollmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram Beteiligungsverwaltung GmbH
Original Assignee
Osram GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Osram GmbH filed Critical Osram GmbH
Assigned to OSRAM GESELLSCHAFT MIT BESCHRANKTER HAFTUNG reassignment OSRAM GESELLSCHAFT MIT BESCHRANKTER HAFTUNG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FREY, PETER, VOLLMER, RALF
Publication of US20100067248A1 publication Critical patent/US20100067248A1/en
Application granted granted Critical
Publication of US8303148B2 publication Critical patent/US8303148B2/en
Assigned to OSRAM BETEILIGUNGSVERWALTUNG GMBH reassignment OSRAM BETEILIGUNGSVERWALTUNG GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OSRAM GMBH
Expired - Fee Related legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141Light emitting diodes [LED]
    • F21S41/143Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19Attachment of light sources or lamp holders
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00Fastening of light sources or lamp holders
    • F21V19/001Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/0035Fastening of light source holders, e.g. of circuit boards or substrates holding light sources the fastening means being capable of simultaneously attaching of an other part, e.g. a housing portion or an optical component
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40Cooling of lighting devices
    • F21S45/47Passive cooling, e.g. using fins, thermal conductive elements or openings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Definitions

  • the invention relates to an illumination unit having at least one light emitting diode chip, and a vehicle headlight incorporating such an illumination unit.
  • Such an illumination unit and such a vehicle headlight are disclosed, for example, in WO 2006/066530 A1.
  • This laid open patent application describes an illumination unit having at least one light emitting diode chip, a housing, formed as a heat sink, that partially surrounds the at least one light emitting diode chip, and having a holder for fixing the at least one light emitting diode chip with reference to the heat sink in a unique position and alignment, the heat sink being provided with fastening means for mounting the illumination unit in a vehicle headlight. Together with corresponding fastening means on the headlight, the fastening means form a bayonet lock.
  • an illumination unit that has at least one light emitting diode chip and a housing at least partially surrounding the at least one light emitting diode chip, the housing having fastening means for mounting the illumination unit in a vehicle headlight.
  • the fastening means comprise at least one projection or one depression that is arranged on the housing and, in order to mount the illumination unit in the luminaire, is provided for the purpose of cooperating with a counterpart, coordinated in an accurately fitting fashion therewith, on a luminaire part, for example on a reflector of the luminaire in such a way that the at least one projection or the at least one depression and the counterpart interlock in an accurately fitting fashion.
  • the luminaire according to an embodiment of the invention has a reflector and an illumination unit, the illumination unit comprising at least one light emitting diode chip and a housing at least partially surrounding the at least one light emitting diode chip.
  • the inventive luminaire has fastening means for mounting the illumination unit on the reflector.
  • the fastening means comprise at least one projection or one depression that is arranged on the housing and that cooperate with a counterpart, coordinated in an accurately fitting fashion therewith, on a luminaire part, for example on a reflector of the luminaire, in such a way that the at least one projection or the at least one depression and the counterpart interlock in an accurately fitting fashion.
  • An exact alignment of the illumination unit and its at least one light emitting diode chip as well as, if appropriate, of a primary optics, mounted on the at least one light emitting diode chip, with reference to the luminaire part or the reflector and, in particular, with reference to the optical axis of the luminaire or the light reflecting surfaces of the reflector is rendered possible in a simple way by means of the at least one projection or the at least one depression and the counterpart coordinated in an accurately fitting fashion therewith.
  • the at least one projection or the at least one depression is advantageously equipped on the housing of the illumination unit with a first bore, and the accurately fitting counterpart is equipped on the luminaire part or the reflector of the luminaire with a second bore, said bores serving to produce a connection, preferably a screw connection, between the illumination unit and the luminaire part or reflector.
  • the portion, forming the edge of the first bore, of the housing, and the portion, forming the edge of the second bore, of the reflector are formed such that they interlock in an accurately fitting fashion.
  • the bores are therefore suitable as a reference for the adjustment of the light emitting diode chip of the illumination unit or the primary optics assigned to it with reference to the light reflecting surfaces of the reflector.
  • the inventive fastening means can, furthermore, be used independently of the form of the electrical connections of the illumination unit. In particular, they are also suitable for illumination units that have electrical connecting cables instead of the contact pins disclosed in the prior art.
  • the first bore or/and the second bore is/are advantageously formed to be constricted in a stepped fashion in order to ensure the accurately fitting interlocking of the edge regions of the bores in the housing of the illumination unit and of the reflector.
  • the more constricted portion of the bores can be used to produce a connection, for example a screw connection, between the illumination unit and the reflector, while the second portion of the first or second bore is responsible for the accurately fitting joining of illumination unit and reflector with precise alignment.
  • the second bore is preferably arranged on the rear side, averted from the light exit opening, of the reflector such that the illumination unit can be mounted on the rear side of the reflector, and the light emitting diode chip, as well as the primary optics, project through a cutout in the reflector. A vignetting of the light by the fastening means for the illumination unit is thereby avoided.
  • the at least one projection or the at least one depression is formed by a wall of the housing of the illumination unit, and the accurately fitting counterpart is formed by guide elements that are arranged on the luminaire part, in particular on the reflector, and are in contact with the wall. It is thereby likewise possible in a simple way to render possible an exact alignment of the illumination unit and its at least one light emitting diode chip as well as, if appropriate, of a primary optics, mounted on the at least one light emitting diode chip, with reference to the luminaire part or the reflector and, in particular, with reference to the optical axis of the luminaire or the surfaces of the reflector that reflect the light.
  • the fastening means of the inventive illumination unit advantageously have at least two projections or depressions that are arranged on the housing and, in order to mount the illumination unit in the luminaire, are provided for the purpose of cooperating with counterparts, coordinated in an accurately fitting fashion therewith, on a luminaire part of the luminaire in such a way that the projections or the depressions and the counterparts interlock in an accurately fitting fashion.
  • FIG. 1 shows a plan view of an illumination unit in accordance with the preferred exemplary embodiment of the invention, in a schematic illustration
  • FIG. 2 shows a plan view of the constricted bore of the illumination unit illustrated in FIG. 1 ,
  • FIG. 3 shows a plan view of the rear side of a vehicle headlight in accordance with the first exemplary embodiment of the inventive luminaire, before the mounting of the illumination unit illustrated in FIG. 1 ,
  • FIG. 4 shows a side view of the primary optics or cover of the illumination unit illustrated in FIG. 1 ,
  • FIG. 5 shows a plan view of the primary optics or cover illustrated in FIG. 4 .
  • FIG. 6 shows an illustration of all the components of the illumination unit in accordance with the first exemplary embodiment illustrated in FIGS. 1 , 2 , 4 and 5 ,
  • FIG. 7 shows an illustration of the illumination unit illustrated in FIG. 6 in the mounted state of all the components
  • FIG. 8 shows a plan view of the rear side of a vehicle headlight in accordance with the second exemplary embodiment of the inventive luminaire, before the mounting of the illumination unit illustrated in FIG. 7 , and
  • FIG. 9 shows a plan view of the rear side of a vehicle headlight in accordance with the third exemplary embodiment of the inventive luminaire, before the mounting of the illumination unit illustrated in FIG. 7 .
  • the illumination unit in accordance with the preferred exemplary embodiments of the invention comprises a pot-like, substantially cylindrically symmetrical housing 100 made from aluminum and having a bottom 101 of the type of a circular disk, and a side wall 102 that is integrally formed on the bottom 101 and runs along the lateral surface of a cylinder.
  • the housing 100 is formed, in particular, as an aluminum die cast part.
  • the bottom 101 of the housing 100 has an elevation 103 that is formed in unipartite fashion with the bottom 101 and has a high middle portion 1030 and two lower lying plateaus 1031 , 1032 .
  • the top side of the middle portion 1030 has a greater height over the bottom 101 of the housing 100 than the two plateaus 1031 , 1032 arranged on different sides of the middle portion.
  • the top side of the middle portion forms a support surface for a carrier plate 2 made from ceramic, which serves as the carrier for five light emitting diode chips 3 , and for a primary optics 400 .
  • the carrier plate 2 ensures an electrical insulation between the metallic housing 100 , in particular the elevation 103 , and the light emitting diode chips 3 .
  • the five light emitting diode chips 3 are arranged on the carrier plate 2 in a row and surrounded by the walls of a frame.
  • the light emitting diode chips 3 emit blue light and are provided with a fluorescent coating (chip layer coating) in order to convert the wavelength of a fraction of the electromagnetic radiation generated by the light emitting diode chips 3 such that the illumination unit emits light of white appearance during its operation.
  • the light emitting diode chips 3 are, for example, thin film light emitting diode chips whose basic principle is described, for example, in the publication I. Schnitzer et al., Appl. Phys. Lett. 63 (16), Oct. 18, 1993, 2174-2176.
  • the carrier plate 2 is bonded with the aid of an automatic placement machine on the top side of the middle portion 1030 of the elevation 103 at a prescribed spacing and with a well defined orientation with reference to a hollow cylindrical web 105 , arranged on the first plateau 1031 , and an elongated hole 104 arranged on the second plateau 1032 .
  • the carrier plate 2 with the light emitting diode chips 3 arranged thereon is arranged between the elongated hole 104 and the hollow cylindrical web 105 .
  • the elongated hole 104 and the hollow cylindrical web 105 serve to align a domelike primary optics 400 ( FIGS. 4 and 5 ) that is placed over the light emitting diode chips 3 , such that the light emitted by the light emitting diode chips 3 or the light emitting diodes is coupled into the primary optics 400 .
  • the primary optics 400 is a transparent, domelike cover for the light emitting diode chips 3 .
  • the primary optics 400 has two webs 401 , 402 which engage in the elongated hole 104 and the hollow cylindrical web 105 in an accurately fitting fashion.
  • the top side or the end of the hollow cylindrical web 105 serves as support surface for the primary optics 400 .
  • a further support surface for the primary optics 400 is formed by a web 106 of oval cross section that is arranged on the first plateau 1031 next to the hollow cylindrical web 105 and opposite the elongated hole 104 .
  • the top side of the cylindrical hollow web 105 and of the web 106 of oval cross section are the same height above the housing bottom 101 as the top side of the middle portion 1030 .
  • the elevation 103 has two, lobe-like integral extensions 109 , 110 , each respectively having a pin 1090 , 1100 , which are arranged on different sides of the plateau 1031 .
  • the pins 1090 , 1100 serve to rivet a mounting board 500 that rests on the top side of the first 1031 and the second plateau 1032 as well as on three further support surfaces 111 , 112 , 113 , respectively provided with a pin 1110 , 1120 , 1130 .
  • the abovenamed support surfaces 111 , 112 , 113 are arranged equidistantly along the inside of an annular web 114 running on the inside of the side wall 102 .
  • the mounting board 500 ( FIG. 6 ) has two substantially rectangular cutouts 501 , 502 , through which the middle portion 1030 and the webs 105 , 106 as well as the pins 107 , 108 project.
  • the components of an operating device for the light emitting diode chips 3 are mounted on the mounting board.
  • the operating device comprises a driver circuit supplying power to the light emitting diode chips 3 , and a voltage transformer for supplying power to the driver circuit from the on-board network voltage of the motor vehicle.
  • the edge of the mounting board 500 which is virtually in the shape of a circular disk, terminates at the inside of the annular support surface 114 for the sealing ring 600 such that the mounting board 500 and the housing bottom 101 as well as the annular web 114 or the sealing ring 600 lying thereupon form an interior.
  • a tub 115 that is filled with a thermally conducting paste.
  • a temperature dependent resistance (not illustrated), in particular a so called NTC (resistance with a negative temperature characteristic), which is in contact with the thermally conducting paste and serves as temperature sensor in order to measure the operating temperature of the light emitting diode chips 3 .
  • the side wall 102 has three recesses 1021 , 1022 , 1023 that are arranged along the circumference of the housing 100 and in which there is respectively arranged a surface 120 , 130 , 140 running parallel to the housing bottom 101 .
  • These surfaces 120 , 130 , 140 are at the same level above the housing bottom 101 , and are respectively bounded by an indentation 1141 , 1142 , 1143 which is, directed into the interior of the housing 100 , of the annular web 114 .
  • a continuous bore 121 Arranged in the first surface 120 is a continuous bore 121 that is constricted in a stepped fashion in the direction of the housing bottom 101 and reaches from the surface 120 as far as the outside of the housing bottom 101 .
  • the bore 121 is designed in such a way that there is arranged in the surface 120 a circular cylindrical depression 122 whose outside radius corresponds to the first, large radius of the bore 121 , and whose inside radius corresponds to the second, small radius of the bore.
  • the depth of the bore 121 is only a few millimeters in the region of the first, large radius, while the region of the bore 121 in the region of the second, small radius reaches from the bottom of the depression 122 up to the outside of the housing bottom 101 . That is to say, the level of the bottom of the depression 122 above the housing bottom 101 is only a few millimeters less than the level of the surfaces 120 , 130 , 140 above the housing bottom 101 .
  • Likewise respectively arranged in the other two surfaces 130 , 140 are continuous bores 131 , 141 whose radius respectively corresponds to the radius of the narrow region of the first bore 121 .
  • the housing bottom 101 Arranged in the housing bottom 101 are, furthermore, two cutouts 150 that serve to guide through electrical connecting cables for the power supply of the components, mounted on the mounting board, of the operating device. Moreover, the housing bottom 101 preferably has three further bores for fastening a heat sink (not illustrated).
  • the depression 122 is provided for the accommodation of a hollow web 210 that is coordinated in an accurately fitting fashion therewith and integrally formed on the rear side 201 of the reflector 200 , illustrated in FIG. 3 , of the vehicle headlight.
  • the outside diameter of this hollow web 210 is coordinated with the first, large radius of the bore 121 , that is to say the radius of the depression 122 .
  • a bore hole 211 whose radius is identical to the second, small radius of the bore 121 and which serves to screw the housing 100 of the illumination unit to the reflector 200 .
  • the screwing is performed from the outside of the housing bottom 101 , the screw being inserted on the outside or rear side of the bottom 101 into the constricted region of the bore 121 , and owing to the screwing operation, finally penetrating into the bore hole 211 , arranged coaxially with the narrow region of the bore 121 , of the hollow web 210 .
  • the hollow web 210 therefore engages in the wider region 122 of the bore 121 in an accurately fitting fashion such that the position of the hollow web 210 and of the stepped bore 121 can serve as a reference for the alignment of the illumination unit or the light emitting diode chips 3 with reference to the reflector 200 .
  • the reflector 200 On its rear side 201 , the reflector 200 has an annular flange 202 whose dimensions are coordinated with the annular web 114 of the illumination unit. Lying on the annular web 114 is a sealing ring 600 made from rubber or silicone that, after the mounting of the illumination unit, bears against the annular flange 202 with a clamping fit. That is to say, after the mounting of the illumination unit in the vehicle headlight, the sealing ring is arranged between the annular flange 202 of the reflector 200 and the annular web 114 of the illumination unit.
  • annular flange 202 Arranged on the annular flange 202 are two further hollow webs 220 , 230 that are respectively provided with a bore hole 221 , 231 and are aligned for the purpose of mounting the illumination unit such that the bore holes 221 and 231 , respectively, are arranged coaxially with the bores 131 and 141 , respectively, in order in each case to be able to insert a screw into the bores 131 and 141 and the bore holes 221 and 231 from the outside or rear side of the housing bottom 101 .
  • the heads of the screws plugging the bores 121 , 131 , 141 bear against the outside or rear side of the housing bottom 101 and their tips extend as far as into the bore holes 211 , 221 , 231 of the corresponding hollow webs 210 , 220 , 230 , in order to produce a screw connection between the housing 100 of the illumination unit and the reflector 200 by means of these screws.
  • the first hollow web 210 is of longer design than the other two hollow webs 220 , 230 and has a stepped end portion with reduced outside diameter, because it engages in an accurately fitting fashion in the depression 122 in the surface 120 .
  • Integrally formed on the annular flange 202 is a pin 203 that engages in a groove 1024 in the side wall 102 of the housing 100 of the illumination unit.
  • the pin 203 lies diametrically opposite the first hollow web 210 .
  • the groove 1024 lies diametrically opposite the support surface 120 . Together with the first hollow web 210 and the steplike bore 121 , the groove 1024 and the pin 203 prevent rotation of the illumination unit about its axis of symmetry.
  • a substantially rectangular cutout 204 Arranged in the rear wall 201 of the reflector 200 is a substantially rectangular cutout 204 through which the light emitting diode chips 3 and the primary optics 400 mounted thereon project after the mounting of the illumination unit such that the light emitted by the light emitting diode chips 3 impinges on the light reflecting surfaces of the reflector 200 after passing through the primary optics 400 .
  • the reflector 200 is a component of a vehicle headlight, preferably a fog light headlight or a headlight for daytime running light or else for a high beam or dimmed headlight.
  • FIG. 8 Illustrated in FIG. 8 is a second exemplary embodiment of a reflector 200 ′ that can be used instead of the reflector 200 illustrated in FIG. 3 together with the illumination unit illustrated in FIGS. 1 , 2 , 4 , 5 , 6 and 7 in order to form an inventive vehicle headlight.
  • the reflector 200 ′ illustrated in FIG. 8 differs from the reflector 200 illustrated in FIG. 3 only in that it has three webs 203 ′ that are arranged equi-distantly along the outer circumference of the annular flange 202 and extend parallel to the axis of annulus of the flange 202 and bear against the outside of the wall 102 of the housing 100 of the illumination unit.
  • the pin 203 in accordance with the reflector 200 of the first exemplary embodiment illustrated in FIG. 3 , they serve as further guide elements for the exact alignment of the reflector 200 ′ and illumination unit.
  • FIG. 9 Illustrated in FIG. 9 is a third exemplary embodiment of a reflector 200 ′′ that, instead of the reflector 200 illustrated in FIG. 3 or instead of the reflector 200 ′ illustrated in FIG. 8 , can be used together with the illumination unit illustrated in FIGS. 1 , 2 , 4 , 5 , 6 and 7 in order to form an inventive vehicle headlight.
  • the reflector 200 ′′ illustrated in FIG. 9 differs from the reflector 200 ′ illustrated in FIG. 8 only in that it has three uniform hollow webs 210 ′′, 220 , 230 for the screw connection of illumination unit and reflector, and in that the lengthened hollow web 210 with the end section of reduced outside diameter has been dispensed with.
  • illumination unit and reflector 200 ′′ is ensured here only by the accurately fitting interlocking of the three webs 210 ′′, 220 , 230 and the wall 102 of the housing 100 of the illumination unit, and with the aid of the pin 203 that, as in the case of the exemplary embodiment illustrated in FIG. 3 , serves to engage in the groove 1024 of the wall 102 of the housing 100 of the illumination unit.
  • a connection between the illumination unit and the reflector 200 ′′ is produced by means of screws that are inserted into the bores 121 , 122 , 123 and into the hollow webs 210 ′′, 220 , 230 .
  • a cooling device which can, for example, consist of cooling ribs or is designed as a heat sink, can be fitted on the outside or the rear side of the housing bottom 101 .

Abstract

An illumination unit having at least one light emitting diode chip and a housing (100) that at least partially surrounds the at least one light emitting diode chip (3), the housing (100) having fastening means for mounting the illumination unit in a luminaire, wherein the fastening means comprise at least one projection or one depression (122; 102) that is arranged on the housing (100) and, in order to mount the illumination unit in the luminaire, cooperates with a counterpart (210; 203′), coordinated in an accurately fitting fashion therewith, on a luminaire part (200; 200′, 200″) of the luminaire in such a way that the at least one projection or the at least one depression (122; 102) and the counterpart (210; 203′) interlock in an accurately fitting fashion.

Description

RELATED APPLICATIONS
This is a U.S. national stage of application No. PCT/EP2007/062650 filed Nov. 21, 2007.
This application claims the priority of German patent application no. 20 2006 018 081.8 filed Nov. 28, 2006, the entire content of which is hereby incorporated by reference.
FIELD OF THE INVENTION
The invention relates to an illumination unit having at least one light emitting diode chip, and a vehicle headlight incorporating such an illumination unit.
I. PRIOR ART
Such an illumination unit and such a vehicle headlight are disclosed, for example, in WO 2006/066530 A1. This laid open patent application describes an illumination unit having at least one light emitting diode chip, a housing, formed as a heat sink, that partially surrounds the at least one light emitting diode chip, and having a holder for fixing the at least one light emitting diode chip with reference to the heat sink in a unique position and alignment, the heat sink being provided with fastening means for mounting the illumination unit in a vehicle headlight. Together with corresponding fastening means on the headlight, the fastening means form a bayonet lock.
II. SUMMARY OF THE INVENTION
It is an object of the invention to provide an illumination unit which is of the generic type and exhibits simplified mounting in the vehicle headlight, and a corresponding vehicle headlight.
This and other objects are attained in accordance with one aspect of the present invention directed to an illumination unit that has at least one light emitting diode chip and a housing at least partially surrounding the at least one light emitting diode chip, the housing having fastening means for mounting the illumination unit in a vehicle headlight. The fastening means comprise at least one projection or one depression that is arranged on the housing and, in order to mount the illumination unit in the luminaire, is provided for the purpose of cooperating with a counterpart, coordinated in an accurately fitting fashion therewith, on a luminaire part, for example on a reflector of the luminaire in such a way that the at least one projection or the at least one depression and the counterpart interlock in an accurately fitting fashion.
The luminaire according to an embodiment of the invention has a reflector and an illumination unit, the illumination unit comprising at least one light emitting diode chip and a housing at least partially surrounding the at least one light emitting diode chip. Moreover, the inventive luminaire has fastening means for mounting the illumination unit on the reflector. The fastening means comprise at least one projection or one depression that is arranged on the housing and that cooperate with a counterpart, coordinated in an accurately fitting fashion therewith, on a luminaire part, for example on a reflector of the luminaire, in such a way that the at least one projection or the at least one depression and the counterpart interlock in an accurately fitting fashion.
An exact alignment of the illumination unit and its at least one light emitting diode chip as well as, if appropriate, of a primary optics, mounted on the at least one light emitting diode chip, with reference to the luminaire part or the reflector and, in particular, with reference to the optical axis of the luminaire or the light reflecting surfaces of the reflector is rendered possible in a simple way by means of the at least one projection or the at least one depression and the counterpart coordinated in an accurately fitting fashion therewith.
The at least one projection or the at least one depression is advantageously equipped on the housing of the illumination unit with a first bore, and the accurately fitting counterpart is equipped on the luminaire part or the reflector of the luminaire with a second bore, said bores serving to produce a connection, preferably a screw connection, between the illumination unit and the luminaire part or reflector.
In accordance with two preferred exemplary embodiments of the invention, the portion, forming the edge of the first bore, of the housing, and the portion, forming the edge of the second bore, of the reflector are formed such that they interlock in an accurately fitting fashion.
An exact alignment of the illumination unit and its at least one light emitting diode chip as well as, if appropriate, of a primary optics, mounted on the at least one light emitting diode chip, with reference to the reflector and, in particular, with reference to the optical axis of the reflector or the light reflecting surfaces of the reflector is rendered possible in a simple way by means of the two abovementioned bores and the edges, interlocking in an accurately fitting fashion, of these bores, since the first and the second bore can be designed very precisely such that only slight tolerances of fractions of a millimeter occur in the case of their position and their diameter. The bores are therefore suitable as a reference for the adjustment of the light emitting diode chip of the illumination unit or the primary optics assigned to it with reference to the light reflecting surfaces of the reflector. The inventive fastening means can, furthermore, be used independently of the form of the electrical connections of the illumination unit. In particular, they are also suitable for illumination units that have electrical connecting cables instead of the contact pins disclosed in the prior art.
The first bore or/and the second bore is/are advantageously formed to be constricted in a stepped fashion in order to ensure the accurately fitting interlocking of the edge regions of the bores in the housing of the illumination unit and of the reflector. In particular, the more constricted portion of the bores can be used to produce a connection, for example a screw connection, between the illumination unit and the reflector, while the second portion of the first or second bore is responsible for the accurately fitting joining of illumination unit and reflector with precise alignment.
The second bore is preferably arranged on the rear side, averted from the light exit opening, of the reflector such that the illumination unit can be mounted on the rear side of the reflector, and the light emitting diode chip, as well as the primary optics, project through a cutout in the reflector. A vignetting of the light by the fastening means for the illumination unit is thereby avoided.
In accordance with an alternative further exemplary embodiment of the invention, the at least one projection or the at least one depression is formed by a wall of the housing of the illumination unit, and the accurately fitting counterpart is formed by guide elements that are arranged on the luminaire part, in particular on the reflector, and are in contact with the wall. It is thereby likewise possible in a simple way to render possible an exact alignment of the illumination unit and its at least one light emitting diode chip as well as, if appropriate, of a primary optics, mounted on the at least one light emitting diode chip, with reference to the luminaire part or the reflector and, in particular, with reference to the optical axis of the luminaire or the surfaces of the reflector that reflect the light.
The fastening means of the inventive illumination unit advantageously have at least two projections or depressions that are arranged on the housing and, in order to mount the illumination unit in the luminaire, are provided for the purpose of cooperating with counterparts, coordinated in an accurately fitting fashion therewith, on a luminaire part of the luminaire in such a way that the projections or the depressions and the counterparts interlock in an accurately fitting fashion. As a result of this, an unmistakable installation position of the illumination unit is ensured and, in particular, a rotary movement is prevented.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is explained in more detail below with the aid of preferred exemplary embodiments. In the drawings:
FIG. 1 shows a plan view of an illumination unit in accordance with the preferred exemplary embodiment of the invention, in a schematic illustration,
FIG. 2 shows a plan view of the constricted bore of the illumination unit illustrated in FIG. 1,
FIG. 3 shows a plan view of the rear side of a vehicle headlight in accordance with the first exemplary embodiment of the inventive luminaire, before the mounting of the illumination unit illustrated in FIG. 1,
FIG. 4 shows a side view of the primary optics or cover of the illumination unit illustrated in FIG. 1,
FIG. 5 shows a plan view of the primary optics or cover illustrated in FIG. 4,
FIG. 6 shows an illustration of all the components of the illumination unit in accordance with the first exemplary embodiment illustrated in FIGS. 1, 2, 4 and 5,
FIG. 7 shows an illustration of the illumination unit illustrated in FIG. 6 in the mounted state of all the components,
FIG. 8 shows a plan view of the rear side of a vehicle headlight in accordance with the second exemplary embodiment of the inventive luminaire, before the mounting of the illumination unit illustrated in FIG. 7, and
FIG. 9 shows a plan view of the rear side of a vehicle headlight in accordance with the third exemplary embodiment of the inventive luminaire, before the mounting of the illumination unit illustrated in FIG. 7.
DETAILED DESCRIPTION OF THE DRAWINGS
The illumination unit in accordance with the preferred exemplary embodiments of the invention comprises a pot-like, substantially cylindrically symmetrical housing 100 made from aluminum and having a bottom 101 of the type of a circular disk, and a side wall 102 that is integrally formed on the bottom 101 and runs along the lateral surface of a cylinder. The housing 100 is formed, in particular, as an aluminum die cast part. On its inside, the bottom 101 of the housing 100 has an elevation 103 that is formed in unipartite fashion with the bottom 101 and has a high middle portion 1030 and two lower lying plateaus 1031, 1032. The top side of the middle portion 1030 has a greater height over the bottom 101 of the housing 100 than the two plateaus 1031, 1032 arranged on different sides of the middle portion. The top side of the middle portion forms a support surface for a carrier plate 2 made from ceramic, which serves as the carrier for five light emitting diode chips 3, and for a primary optics 400. The carrier plate 2 ensures an electrical insulation between the metallic housing 100, in particular the elevation 103, and the light emitting diode chips 3. The five light emitting diode chips 3 are arranged on the carrier plate 2 in a row and surrounded by the walls of a frame. The light emitting diode chips 3 emit blue light and are provided with a fluorescent coating (chip layer coating) in order to convert the wavelength of a fraction of the electromagnetic radiation generated by the light emitting diode chips 3 such that the illumination unit emits light of white appearance during its operation. The light emitting diode chips 3 are, for example, thin film light emitting diode chips whose basic principle is described, for example, in the publication I. Schnitzer et al., Appl. Phys. Lett. 63 (16), Oct. 18, 1993, 2174-2176. The carrier plate 2 is bonded with the aid of an automatic placement machine on the top side of the middle portion 1030 of the elevation 103 at a prescribed spacing and with a well defined orientation with reference to a hollow cylindrical web 105, arranged on the first plateau 1031, and an elongated hole 104 arranged on the second plateau 1032. The carrier plate 2 with the light emitting diode chips 3 arranged thereon is arranged between the elongated hole 104 and the hollow cylindrical web 105. The elongated hole 104 and the hollow cylindrical web 105 serve to align a domelike primary optics 400 (FIGS. 4 and 5) that is placed over the light emitting diode chips 3, such that the light emitted by the light emitting diode chips 3 or the light emitting diodes is coupled into the primary optics 400. In the simplest case, the primary optics 400 is a transparent, domelike cover for the light emitting diode chips 3. The primary optics 400 has two webs 401, 402 which engage in the elongated hole 104 and the hollow cylindrical web 105 in an accurately fitting fashion. The top side or the end of the hollow cylindrical web 105 serves as support surface for the primary optics 400. A further support surface for the primary optics 400 is formed by a web 106 of oval cross section that is arranged on the first plateau 1031 next to the hollow cylindrical web 105 and opposite the elongated hole 104. The top side of the cylindrical hollow web 105 and of the web 106 of oval cross section are the same height above the housing bottom 101 as the top side of the middle portion 1030. Furthermore, there are arranged on the first 1031 and second plateau 1032 two mutually opposite pins 107, 108 that engage in cutouts 403, 404 at the edge of the primary optics 400 in order to fix the latter on the housing 100. In the region of the first plateau 1031, the elevation 103 has two, lobe-like integral extensions 109, 110, each respectively having a pin 1090, 1100, which are arranged on different sides of the plateau 1031. The pins 1090, 1100 serve to rivet a mounting board 500 that rests on the top side of the first 1031 and the second plateau 1032 as well as on three further support surfaces 111, 112, 113, respectively provided with a pin 1110, 1120, 1130. The abovenamed support surfaces 111, 112, 113 are arranged equidistantly along the inside of an annular web 114 running on the inside of the side wall 102. The mounting board 500 (FIG. 6) has two substantially rectangular cutouts 501, 502, through which the middle portion 1030 and the webs 105, 106 as well as the pins 107, 108 project. The components of an operating device for the light emitting diode chips 3 are mounted on the mounting board. In particular, the operating device comprises a driver circuit supplying power to the light emitting diode chips 3, and a voltage transformer for supplying power to the driver circuit from the on-board network voltage of the motor vehicle. The edge of the mounting board 500, which is virtually in the shape of a circular disk, terminates at the inside of the annular support surface 114 for the sealing ring 600 such that the mounting board 500 and the housing bottom 101 as well as the annular web 114 or the sealing ring 600 lying thereupon form an interior. In addition to the lobe-like integral extension 109 and the hollow cylindrical web 105, there is formed in the elevation 103 a tub 115 that is filled with a thermally conducting paste. Arranged on the tub 115 is a temperature dependent resistance (not illustrated), in particular a so called NTC (resistance with a negative temperature characteristic), which is in contact with the thermally conducting paste and serves as temperature sensor in order to measure the operating temperature of the light emitting diode chips 3. The side wall 102 has three recesses 1021, 1022, 1023 that are arranged along the circumference of the housing 100 and in which there is respectively arranged a surface 120, 130, 140 running parallel to the housing bottom 101. These surfaces 120, 130, 140 are at the same level above the housing bottom 101, and are respectively bounded by an indentation 1141, 1142, 1143 which is, directed into the interior of the housing 100, of the annular web 114. Arranged in the first surface 120 is a continuous bore 121 that is constricted in a stepped fashion in the direction of the housing bottom 101 and reaches from the surface 120 as far as the outside of the housing bottom 101. The bore 121 is designed in such a way that there is arranged in the surface 120 a circular cylindrical depression 122 whose outside radius corresponds to the first, large radius of the bore 121, and whose inside radius corresponds to the second, small radius of the bore. The depth of the bore 121 is only a few millimeters in the region of the first, large radius, while the region of the bore 121 in the region of the second, small radius reaches from the bottom of the depression 122 up to the outside of the housing bottom 101. That is to say, the level of the bottom of the depression 122 above the housing bottom 101 is only a few millimeters less than the level of the surfaces 120, 130, 140 above the housing bottom 101. Likewise respectively arranged in the other two surfaces 130, 140 are continuous bores 131, 141 whose radius respectively corresponds to the radius of the narrow region of the first bore 121. Arranged in the housing bottom 101 are, furthermore, two cutouts 150 that serve to guide through electrical connecting cables for the power supply of the components, mounted on the mounting board, of the operating device. Moreover, the housing bottom 101 preferably has three further bores for fastening a heat sink (not illustrated).
The depression 122 is provided for the accommodation of a hollow web 210 that is coordinated in an accurately fitting fashion therewith and integrally formed on the rear side 201 of the reflector 200, illustrated in FIG. 3, of the vehicle headlight. The outside diameter of this hollow web 210 is coordinated with the first, large radius of the bore 121, that is to say the radius of the depression 122. Arranged in the hollow web 210 is a bore hole 211 whose radius is identical to the second, small radius of the bore 121 and which serves to screw the housing 100 of the illumination unit to the reflector 200. The screwing is performed from the outside of the housing bottom 101, the screw being inserted on the outside or rear side of the bottom 101 into the constricted region of the bore 121, and owing to the screwing operation, finally penetrating into the bore hole 211, arranged coaxially with the narrow region of the bore 121, of the hollow web 210. The hollow web 210 therefore engages in the wider region 122 of the bore 121 in an accurately fitting fashion such that the position of the hollow web 210 and of the stepped bore 121 can serve as a reference for the alignment of the illumination unit or the light emitting diode chips 3 with reference to the reflector 200. On its rear side 201, the reflector 200 has an annular flange 202 whose dimensions are coordinated with the annular web 114 of the illumination unit. Lying on the annular web 114 is a sealing ring 600 made from rubber or silicone that, after the mounting of the illumination unit, bears against the annular flange 202 with a clamping fit. That is to say, after the mounting of the illumination unit in the vehicle headlight, the sealing ring is arranged between the annular flange 202 of the reflector 200 and the annular web 114 of the illumination unit. Arranged on the annular flange 202 are two further hollow webs 220, 230 that are respectively provided with a bore hole 221, 231 and are aligned for the purpose of mounting the illumination unit such that the bore holes 221 and 231, respectively, are arranged coaxially with the bores 131 and 141, respectively, in order in each case to be able to insert a screw into the bores 131 and 141 and the bore holes 221 and 231 from the outside or rear side of the housing bottom 101. That is to say, the heads of the screws plugging the bores 121, 131, 141 bear against the outside or rear side of the housing bottom 101 and their tips extend as far as into the bore holes 211, 221, 231 of the corresponding hollow webs 210, 220, 230, in order to produce a screw connection between the housing 100 of the illumination unit and the reflector 200 by means of these screws. The first hollow web 210 is of longer design than the other two hollow webs 220, 230 and has a stepped end portion with reduced outside diameter, because it engages in an accurately fitting fashion in the depression 122 in the surface 120. Integrally formed on the annular flange 202 is a pin 203 that engages in a groove 1024 in the side wall 102 of the housing 100 of the illumination unit. The pin 203 lies diametrically opposite the first hollow web 210. Similarly, the groove 1024 lies diametrically opposite the support surface 120. Together with the first hollow web 210 and the steplike bore 121, the groove 1024 and the pin 203 prevent rotation of the illumination unit about its axis of symmetry.
Arranged in the rear wall 201 of the reflector 200 is a substantially rectangular cutout 204 through which the light emitting diode chips 3 and the primary optics 400 mounted thereon project after the mounting of the illumination unit such that the light emitted by the light emitting diode chips 3 impinges on the light reflecting surfaces of the reflector 200 after passing through the primary optics 400.
The reflector 200, with the illumination unit mounted on it, is a component of a vehicle headlight, preferably a fog light headlight or a headlight for daytime running light or else for a high beam or dimmed headlight.
Illustrated in FIG. 8 is a second exemplary embodiment of a reflector 200′ that can be used instead of the reflector 200 illustrated in FIG. 3 together with the illumination unit illustrated in FIGS. 1, 2, 4, 5, 6 and 7 in order to form an inventive vehicle headlight. The reflector 200′ illustrated in FIG. 8 differs from the reflector 200 illustrated in FIG. 3 only in that it has three webs 203′ that are arranged equi-distantly along the outer circumference of the annular flange 202 and extend parallel to the axis of annulus of the flange 202 and bear against the outside of the wall 102 of the housing 100 of the illumination unit. Instead of the pin 203 in accordance with the reflector 200 of the first exemplary embodiment illustrated in FIG. 3, they serve as further guide elements for the exact alignment of the reflector 200′ and illumination unit.
Illustrated in FIG. 9 is a third exemplary embodiment of a reflector 200″ that, instead of the reflector 200 illustrated in FIG. 3 or instead of the reflector 200′ illustrated in FIG. 8, can be used together with the illumination unit illustrated in FIGS. 1, 2, 4, 5, 6 and 7 in order to form an inventive vehicle headlight. The reflector 200″ illustrated in FIG. 9 differs from the reflector 200′ illustrated in FIG. 8 only in that it has three uniform hollow webs 210″, 220, 230 for the screw connection of illumination unit and reflector, and in that the lengthened hollow web 210 with the end section of reduced outside diameter has been dispensed with. The alignment of illumination unit and reflector 200″ is ensured here only by the accurately fitting interlocking of the three webs 210″, 220, 230 and the wall 102 of the housing 100 of the illumination unit, and with the aid of the pin 203 that, as in the case of the exemplary embodiment illustrated in FIG. 3, serves to engage in the groove 1024 of the wall 102 of the housing 100 of the illumination unit. A connection between the illumination unit and the reflector 200″ is produced by means of screws that are inserted into the bores 121, 122, 123 and into the hollow webs 210″, 220, 230.
The invention is not limited to the exemplary embodiments explained in more detail above. For example, a cooling device which can, for example, consist of cooling ribs or is designed as a heat sink, can be fitted on the outside or the rear side of the housing bottom 101.

Claims (6)

1. A luminaire comprising:
an illumination unit, the illumination unit comprising:
at least one light emitting diode chip; and
a housing that at least partially surrounds the at least one light emitting diode chip and is provided with fastening means for mounting the illumination unit on a luminaire part;
wherein the fastening means comprise a projection or a depression that is arranged at a circumference on the housing and cooperates with a counterpart, coordinated in an accurately fitting manner therewith, on the luminaire part of the luminaire such that the projection or the depression and the counterpart interlock in an accurately fitting manner;
wherein said projection or depression includes a first bore, and the accurately fitting counterpart includes a second bore, said first and second bores being coaxially aligned for mounting the illumination unit on the luminaire part, and at least one of said first and second bores being constricted in a stepped manner; and
wherein said first and said second bores are formed as a component of a screw connection between the illumination unit and the luminaire part.
2. The luminaire as claimed in claim 1, wherein a portion of the projection or the depression, forming an edge of the first bore of the housing, and the portion forming an edge of the second bore of the luminaire part interlock in the accurately fitting manner.
3. The luminaire as claimed in claim 1, wherein the second bore is arranged on a rear side, averted from a light exit opening, of the luminaire part.
4. The luminaire as claimed in claim 1, wherein the projection or the depression is formed by a wall of the housing, and the accurately fitting counterpart is formed by guiding elements, arranged on the luminaire part, which are in contact with the wall.
5. The luminaire as claimed in claim 1, wherein the fastening means comprise at least two projections or depressions that are arranged at the circumference on the housing and cooperate with counterparts, coordinated in the accurately fitting manner therewith, on the luminaire part of the luminaire such that the at least two projections or depressions and the counterparts interlock in the accurately fitting manner.
6. The luminaire as claimed in claim 1 formed as a vehicle headlight.
US12/516,706 2006-11-28 2007-11-21 Illumination unit for vehicle headlights, and vehicle headlight Expired - Fee Related US8303148B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202006018081.8 2006-11-28
DE202006018081U 2006-11-28
DE202006018081U DE202006018081U1 (en) 2006-11-28 2006-11-28 Lighting unit for e.g. vehicle headlight, has fastening unit with projection and/or recess that works together with counterpiece at illuminating part of lighting fixture, such that projection and/or recess and counterpiece are interlocked
PCT/EP2007/062650 WO2008065030A1 (en) 2006-11-28 2007-11-21 Illumination unit for vehicle headlights, and vehicle headlight

Publications (2)

Publication Number Publication Date
US20100067248A1 US20100067248A1 (en) 2010-03-18
US8303148B2 true US8303148B2 (en) 2012-11-06

Family

ID=37763706

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/516,706 Expired - Fee Related US8303148B2 (en) 2006-11-28 2007-11-21 Illumination unit for vehicle headlights, and vehicle headlight

Country Status (5)

Country Link
US (1) US8303148B2 (en)
EP (1) EP2095016B1 (en)
CN (1) CN101553688B (en)
DE (1) DE202006018081U1 (en)
WO (1) WO2008065030A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180015870A1 (en) * 2016-07-14 2018-01-18 Ford Global Technologies, Llc Anti-theft integrated attachment system
US20180038557A1 (en) * 2016-08-08 2018-02-08 Ledvance Gmbh Lighting device with lens
US9909732B2 (en) 2013-10-11 2018-03-06 Valeo Vision Belgique Lighting or indicating device for a motor vehicle and corresponding assembly method
DE102017209239A1 (en) * 2017-05-31 2018-12-06 Osram Gmbh OPTICAL DEVICE, LIGHTING ARRANGEMENT, HEADLAMP AND METHOD

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008031256A1 (en) * 2008-07-02 2010-01-07 Osram Gesellschaft mit beschränkter Haftung Lighting unit for vehicle headlights and vehicle headlights
DE102008031262A1 (en) 2008-07-02 2010-01-07 Osram Gesellschaft mit beschränkter Haftung Lighting unit for vehicle headlights and vehicle headlights
DE102009016876B4 (en) 2009-04-08 2019-09-05 Osram Gmbh Lighting unit for vehicle headlights and vehicle headlights
DE102009021236A1 (en) 2009-05-14 2010-12-02 Osram Gesellschaft mit beschränkter Haftung Light-emitting diode module and lighting unit with light-emitting diode module
US8314559B1 (en) * 2009-08-24 2012-11-20 Ibis Tek, Llc LED headlamp with a heated cover
KR101090728B1 (en) 2010-04-10 2011-12-08 엘지이노텍 주식회사 Lighting apparatus
EP2789899B1 (en) 2010-04-10 2017-07-05 LG Innotek Co., Ltd. Lighting apparatus
IT1404069B1 (en) * 2010-05-03 2013-11-08 Menegon ROTATION SYSTEM FOR LUMINOUS FLOW CONVEYOR WITH REFERENCE FEET.
US8678632B2 (en) 2010-08-27 2014-03-25 General Electric Company Replaceable light emitting diode module with high optical precision
FR2967235B1 (en) * 2010-11-05 2014-10-31 Valeo Vision LIGHTING OR SIGNALING DEVICE FOR A MOTOR VEHICLE HAVING A LIGHT GUIDE RAIL.
CN102468375B (en) * 2010-11-15 2015-06-17 光宝电子(广州)有限公司 Light-emitting diode packaging structure and manufacturing method thereof
US9470408B2 (en) * 2011-04-25 2016-10-18 Molex, Llc Illumination system
DE102011081062A1 (en) * 2011-08-17 2013-02-21 Automotive Lighting Reutlingen Gmbh Headlight for a motor vehicle with a replaceable complex light source
AT512588B1 (en) * 2012-03-12 2014-12-15 Zizala Lichtsysteme Gmbh Light source module with laser light source and vehicle headlights
DE102012206332A1 (en) 2012-04-17 2013-10-17 Osram Gmbh lighting device
DE102012106005B4 (en) 2012-07-05 2021-08-19 HELLA GmbH & Co. KGaA Lighting device for vehicles with positioning means for adjusting a reflector on a heat sink which receives a light source
CN104613398B (en) * 2013-11-04 2019-02-01 深圳市海洋王照明工程有限公司 Automobile lamp
JP6485435B2 (en) * 2016-12-07 2019-03-20 トヨタ自動車株式会社 Control data generation device and vehicle control device
JP7415305B2 (en) 2020-04-09 2024-01-17 東芝ライテック株式会社 Vehicle lighting equipment and vehicle lights

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600646A2 (en) 1992-11-20 1994-06-08 Pitney Bowes Inc. Secure document and method and apparatus for producing and authenticating same
US5823654A (en) * 1993-02-01 1998-10-20 Donnelly Corporation Universal exterior vehicle security light
DE20009633U1 (en) 2000-05-29 2000-09-21 Insta Elektro Gmbh & Co Kg Universal LED lamp for indoor and outdoor lighting in mains operation
WO2006066530A1 (en) 2004-12-22 2006-06-29 Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh Lighting device comprising at least one light-emitting diode and vehicle headlight
WO2006082537A1 (en) 2005-02-02 2006-08-10 Philips Intellectual Property & Standards Gmbh Light-source module and holder therefor
WO2006097067A1 (en) 2005-03-16 2006-09-21 Osram Opto Semiconductors Gmbh Light-emitting module comprising leds and dowel pins for assembling an optical element
DE102005018282A1 (en) * 2005-04-13 2006-10-19 Würth Elektronik GmbH & Co. KG Attachment arrangement for attaching a luminous diode to a rear side of a printed circuit board illuminated from behind has a casing carcass linked to the circuit board, front sides and a rear wall

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600646A2 (en) 1992-11-20 1994-06-08 Pitney Bowes Inc. Secure document and method and apparatus for producing and authenticating same
US5823654A (en) * 1993-02-01 1998-10-20 Donnelly Corporation Universal exterior vehicle security light
DE20009633U1 (en) 2000-05-29 2000-09-21 Insta Elektro Gmbh & Co Kg Universal LED lamp for indoor and outdoor lighting in mains operation
WO2006066530A1 (en) 2004-12-22 2006-06-29 Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh Lighting device comprising at least one light-emitting diode and vehicle headlight
US7621667B2 (en) * 2004-12-22 2009-11-24 Osram Gesellschaft Mit Beschraenkter Haftung Lighting device comprising at least one light-emitting diode and vehicle headlight
WO2006082537A1 (en) 2005-02-02 2006-08-10 Philips Intellectual Property & Standards Gmbh Light-source module and holder therefor
WO2006097067A1 (en) 2005-03-16 2006-09-21 Osram Opto Semiconductors Gmbh Light-emitting module comprising leds and dowel pins for assembling an optical element
DE102005018282A1 (en) * 2005-04-13 2006-10-19 Würth Elektronik GmbH & Co. KG Attachment arrangement for attaching a luminous diode to a rear side of a printed circuit board illuminated from behind has a casing carcass linked to the circuit board, front sides and a rear wall
EP1715242A2 (en) 2005-04-13 2006-10-25 WÜRTH ELEKTRONIK GmbH & Co. KG Illumination arrangement for circuit board

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9909732B2 (en) 2013-10-11 2018-03-06 Valeo Vision Belgique Lighting or indicating device for a motor vehicle and corresponding assembly method
US20180015870A1 (en) * 2016-07-14 2018-01-18 Ford Global Technologies, Llc Anti-theft integrated attachment system
US20180038557A1 (en) * 2016-08-08 2018-02-08 Ledvance Gmbh Lighting device with lens
US11054089B2 (en) * 2016-08-08 2021-07-06 Ledvance Gmbh Lighting device with lens
DE102017209239A1 (en) * 2017-05-31 2018-12-06 Osram Gmbh OPTICAL DEVICE, LIGHTING ARRANGEMENT, HEADLAMP AND METHOD

Also Published As

Publication number Publication date
CN101553688B (en) 2012-03-14
US20100067248A1 (en) 2010-03-18
DE202006018081U1 (en) 2007-02-08
EP2095016B1 (en) 2017-03-08
WO2008065030A1 (en) 2008-06-05
EP2095016A1 (en) 2009-09-02
CN101553688A (en) 2009-10-07

Similar Documents

Publication Publication Date Title
US8303148B2 (en) Illumination unit for vehicle headlights, and vehicle headlight
US7806562B2 (en) Lighting device comprising at least one light-emitting diode and vehicle headlight
US7621667B2 (en) Lighting device comprising at least one light-emitting diode and vehicle headlight
JP5699753B2 (en) Lamp apparatus and lighting apparatus
KR101574405B1 (en) Light emitting module
US20130020941A1 (en) Semiconductor Lamp
TWI535972B (en) Vehicle lighting device
KR20150036646A (en) Led automobile headlamp
JP5757214B2 (en) LED lighting device
JP2014120388A (en) Light source unit of lighting device for vehicle
US20140146553A1 (en) Lighting module for a vehicle lighting device with semiconductor light source
CN102022699A (en) Light emitting module and vehicle lamp
JP6074742B2 (en) Light source unit and vehicle headlamp using the same
KR101384955B1 (en) Luminaire
JP5879558B2 (en) Light emitting device
JP2007027325A (en) Lighting device
JP5407025B2 (en) Light source unit of semiconductor light source for vehicle lamp, vehicle lamp
JP2007027325A5 (en)
EP2778501B1 (en) Illumination light source and lighting apparatus
CN107152609B (en) Optical module
CN108431490B (en) Lighting arrangement with accurate optical element positioning
US11719427B2 (en) Base body for a light conversion or illuminating device
JP2012216305A (en) Lamp device and lighting fixture
JP2019012617A (en) Lighting device
JP2013008582A (en) Lamp device

Legal Events

Date Code Title Description
AS Assignment

Owner name: OSRAM GESELLSCHAFT MIT BESCHRANKTER HAFTUNG,GERMAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FREY, PETER;VOLLMER, RALF;REEL/FRAME:023113/0315

Effective date: 20090423

Owner name: OSRAM GESELLSCHAFT MIT BESCHRANKTER HAFTUNG, GERMA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FREY, PETER;VOLLMER, RALF;REEL/FRAME:023113/0315

Effective date: 20090423

STCF Information on status: patent grant

Free format text: PATENTED CASE

FPAY Fee payment

Year of fee payment: 4

AS Assignment

Owner name: OSRAM BETEILIGUNGSVERWALTUNG GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OSRAM GMBH;REEL/FRAME:051381/0677

Effective date: 20191219

FEPP Fee payment procedure

Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

LAPS Lapse for failure to pay maintenance fees

Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Expired due to failure to pay maintenance fee

Effective date: 20201106